TREA

John W. Churchill

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  • Beverly, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Heater unit
    • Patent number 4,965,436
    • Issue date Oct 23, 1990
    • Southport Enterprises
    • John W. Churchill
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Heater unit
    • Patent number 4,349,727
    • Issue date Sep 14, 1982
    • Southport Enterprises, Inc.
    • John W. Churchill
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Bilateral heater unit
    • Patent number 4,125,761
    • Issue date Nov 14, 1978
    • John W. Churchill
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Bilateral heater unit and method of construction
    • Patent number 3,982,099
    • Issue date Sep 21, 1976
    • John W. Churchill
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Method of constructing bilateral heater unit
    • Patent number 3,934,333
    • Issue date Jan 27, 1976
    • John W. Churchill
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR